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G. P. SALISBURY & 0. POSTER. FEED WATER REGULATOR FOR STEAM BOILERS.

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' STATES PATENT Prion.

GEORGE P. SALISBURYANI) CHARLES W. FOSTER, OF NEW HAVEN, CONN.

FEED-WATER REGULATOR FO R STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 284,762, dated September 11, 1883.

Application filed Mafia-2,1883. (N modem To all wltom it may concern.-

Be it known that we, GEORGE P. SALISBURY and CHAS. W. FosrER, citizens of the United States of America, residing at New Haven, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Feed-Water Regulators for Steam-Boilers, of which the following is a specification, reference being had therein to the accompanying drawing, in which the figure, which is sectional in part, shows our improvement.

Our invention relates to improved means for supplying water to steam-boilers automatically, and in such a manner that the quantity of water in the boiler shall be uniform or very nearly uniform.

To this end the invention consists in avalve which is operated by a knee ortoggle j oint in connection with a float, as the invention is hereinafter more fully described and explained by reference to the'drawing.

To enable others to make and use our improvement, we will give a detailed description of the same.

A is a shell, of sheet metal, of the requisite thickness to insure sufficient strength, and may vary in form, the only requisite being that it be of such size as to inclose our improvement. The pipes B and 0 connect the shell with the boiler, the pipe B connecting it with that portion of the boiler whichis above the waterline, and the pipe 0 connecting it with that portion which is below the water-line.

The feed-water valve L is cylindrical in form, and is free to move in the part G. It ispivoted to the end of the lever H in the manner shown, closes the port d, and its seat is on the part G. The lever H is bent at right angles near its end, and the end is formed to'make, in connection with the link e, aknee or toggle joint. As before stated, the valve is pivoted to the end of the lever, and so is the link 6, which is also pivoted to the part G. Thus constructed, as the float I descends, the link 6 moves toward the dotted line, the valve is drawn back from its seat, and the port (I is opened. The other end of the leverH is fastened to the float I, which is preferably a hollow sphere. IVe do not confine ourselves to any particular form of feed-water valve, but prefer the form shown. The piece G is screwed onto the piece F, which connects it with the feed water pipe D. It has a projection or part in which the valve L moves, and is extended and forms a support for oneend of the link 6. In this part the port d is formed. The piece F connects the feedwaterpipeD with the piece G, which serves as a nut to hold the piece F to the-shell A. From the passage in this piece the valve a opens. into the chamber '0, which connects with the waste-water pipe E, which is made to connect with the water-tank, if need be, to prevent any waste of water. The pivoted lever J, having the weight K, operates on the valve-stem b to hold the valve a to its seat. Water is forced through the feed-water pipe D by any suitable meansas, for example, a force-pump, injector, or in cities where the source of the v watersupply is sufficiently elevated to force water into steam-boilers, as v is frequently the case, the feed-water pipe may be directly connected with the city water-pipe.

In our improvement a stream of water is kept continually running through the feed water pipe while the boiler is in use, which is sufficient or a little more than sufficient to supply the boiler with'water. The waste-valve a is also held to its seat by the means described, so that it will require a greater pressure to raise it than the pressure of the steam in the boiler; or, in case a safety or blow-off valve is used, the valve (4 should be held to its seat, so that a greater pressure is required to open it than is required to open the safety-valve.

Constructed as above described and as shown, the operation of our feed-water supply is as follows: As the feed-water is continually forced through the feed-water pipe while the boiler is in use, and as the feedwater valve is opened by the conversion of the water in the boiler into steam, or by its diminution from any cause, the feed-water enters the boiler, when the water in the same is low enough to open or partially open the feed-water valve, and keeps the quantity of water in the boiler uniform or verynearly uniform, while any excess of water passes out through the waste Valve and pipe.

\Ve are well aware that many contrivances have been made to keep the quantity of water quantity of Water in the boiler is keptnearly in boilers uniform by their automatic action; uniform, all arranged as set forth.

but In testimony whereof We afiix our signatures What We claim as our invention, and desire in presence of two Witnesses. 5 to secureby Letters Patent, 1s GEORGE P. SALISBURY The feed-water valve L, link 0, lever H,'and float I, in combination with suitable means for 4 forcing water into the boiler, and with the Vitnesses: waste-Water valve a, held to its seat by the GEORGE TERRY, IO Weighted lever J, as described, whereby the FRANK 1?. SMITH.

CHAS. \V. FOSTER. 

